Unable to download casino software so they are refusing to refund my deposit

I opened an account with Everest and made my first deposit. It then became apparent that I would have to download the casino to my laptop in order to access the games - this was not made clear before I deposited. I only have a company laptop, and therefore am unable to download casino software to it - I can only play using Instant Play. I contacted the casino 3 times by email explaining this, and have had some bizarre responses. One of them being about bonuses?? I didn't mention bonuses, my complaint was not to do with bonuses, so their command of the English language isn't always good. I spoke to someone on live chat yesterday, who told me she would contact the finance department explaining my situation - it is impossible for me to play through my deposit as it is impossible for me to download the casino, so I just want my money back. I have now received another email not referring to my problem at all, but again saying that they won't refund my deposit until I have played through the deposit amount at least once! I am tearing my hair out, I can not do that as my laptop won't allow me to download their casino. They really should not have a system where someone is able to deposit without the download, had that been the case, I would not have made the deposit. So, I am in the situation that they have my money, I can't play through it and they are refusing to refund it. It is only £25, that is not the point. It is my money that I believe was taken under false pretenses as it was taken without any requirement of a download. This is not very good customer service, and doesn't do Everest Casino's reputation much good. Please just give me back my money.